Yes but most of images are from Whatsapp messages. And they are JPEG.
Re:JPEG XL exceeds 20% of served images
by scorpio241 on Tuesday March 26, 2024 @12:18PM
(#39829599)
Apple was always very frugal regarding memory and storage
Another rationale is that the Apple ecosystems tends to not use JPEG by default anyway, right? It uses HEIC or something.